Improvement in machines for tapping boilers



To all whom it may concern:

`Be it known that we, 'PARLEY I. PERRIN, of

Taunton, in the county ot Bristol and State of Massachusetts, and JosEPH L. Hnwns, of

Newark, in the county of Essex and Stateof New Jersey, have invented anew and Improved Machine for Tapping Boilers, &c. and

we do hereby declare that the following is a full, clear, and exactdescription thereof, which l will enable othersskilled in the art tomake and use the same, reference being had to the accompanying drawing,forming part of this specification. j

Figure l represents a side `elevation of our improved machine fortapping boilers, 85o. Fig.2 is a vertical transverse section of thesaine, .fr w, Fig. l, beingthe section-line. Fig.

, 3 is a horizontal section of the same, y y, Fig. 1, being thesection-line. Fig". 4. is a detail enlarged section of the universaljoint at the end ofthe adjustable spindle.`

` Similar' letters of reference indicate corresponding parts.

`Our invention relates to the drill-spindles of machines fortappingboilers or doing anal-4 ogous work; and consists in constructingand connecting the same to its boring-tool, so as `to allow a slightlateral play to the tool. `'Ihe invention is more particularly intended,p for` use on locomotive and other steam-boilers,

`but may be used with equal advantage on other articles or apparatus.

The rotary spindle is vertically and longitudinally adjustable, and ishung in a swiveldisk for receiving direction. It has a joint near itsouter end to yield to slight differences 7 in the position of drill andspindle.

`A in the drawing represents a vertical shaft, hung in a frame, `B,`ofsuitable shape, and connected by gearing 19 or otherwise with a suitabledrivin g-shaft, U. D is a sliding'plate, arranged tojwork up and downalong one face of the frame B. '.Itcarries at its face a swiveldisk, E,in which is `hung a central arbor, c, carrying bevel-gear wheels b c atits ends, as in Fig. 2. The inner wheel, b, meshes into l NITE-n STATESl PARLEY I. PERRIN, O F TANTON, MASSAGHUSETTS, AND JOSEPH L. HEWES 0FNEWARK, NEW JERSEY, ASSIGNORS TO PARLEY I. PERRIN.

PATENT OEEIoE.

IMPROVEMENT IN 'MACHINES FOR TAPPING BOILERS.

Specification forming part of Letters Patent N0. 112,626, dated- March14, 1871.

the teeth of a pinion, el, which is vertically ad'- justable on theshaft A, being bya groove and feather connected with, to be revolved by,the same.

The plate D carries an arbor, e, with a pin ion, f, meshing into atoothed rack, g, formed stationary on the frame B. By turning the arborc the plate .D will be adjusted up or down at will on the frame B, butwill, during the adjustment, always retain the arbor ain gear with theshaft A, as the pinion d will slide up and down to constantly remain ingear with b.

The outer pinion, e, of the arbor a meshes into a pinion h, that fitsloose over a spindle, F, whose bearings are in ears i i, projecting fromthe disk E. The pinion h is so fitted upon r the spindle F that it willb revolved together with the same, but allow longitudinal adjust` mentof said spindle. A

f A pinion, j, on an arbor, k, that is hung to the disk E, meshes intothe toothed or grooved spindle F, and serves to adj ust the samelongitudinally.

A pinion, l, on an arbor that is hung to the frame B, meshes into thetoothed edge of the disk E, and serves to revolve the saine, so as toset the spindle to any suitable inclined position. x

The plate D, with all its appendages, is balanced by weights G Gr,passing over friction rollers a n, as shown.

It will be seen that in every position of the plate, disk, or spindlethe latter is in con` stantgear with the shaft A, and therefore always'revolved. By the arbor 7c the spindle is gradually fed ahead to forcethe boring or other tool forward, or it is drawn back from the plate orarticle against which it was working. By the arbor m the spindle isadjusted to an inclined horizontal or vertical position, and by thearbor e it will be set to the requisite height.

, The front end of the spindle is tted inform of a sleeve, o, upon thebody thereof, and has a slight play, as on a limited universal joint.

The boring or other tool H fitted into said line with the latter Withoutbeing strained sieeve can thus slightly Vary from the directhereby.

tion of the spindle without straining any of PARLEY I. PERRIN. theparts. JOSEPH L. HEWES.

Having thus described our invention, We Wltnesses for Perrin:

eiaim as new and desire to secure by Letters E. D. GODFREY 1 l tente H FBAssr/rr 7 The spindle F and ytooi H, combined, as described, with :u1intermediate sleeve7 o, hfw- Witnesses for Hewes: ing :t slightlztteralplay upon sind spindle, for GEO. W. WILLIAMS, the purpose of enablingthe tool t0 get out 0i' J. R. WILLIAMS.

